Configuring into your System an Unpartitioned Disk Already Containing Data

Back up the data on the disk being configured into the system; see the backup chapter in Managing Systems and Workgroups.

Create a record of the system's current disk configuration for later use:

/usr/sbin/ioscan -fun -C disk

Note whether the current configuration includes the device driver needed to communicate with the disk you intend to configure. Consult “Selecting Device Drivers for a Disk Device and Interface” for guidelines on compatible disks, device drivers, and interfaces.

If any necessary device driver is absent from the kernel, you will need to rebuild the kernel to include it. Here is how you rebuild the kernel:

1. Change directory to the build environment (/stand/build). Execute a system preparation script, system_prep, which extracts the system file from the current kernel and writes a system file in your current directory. (That is, it creates /stand/build/system.) The -v gives verbose explanation as the script executes.

   cd /stand/build /usr/lbin/sysadm/system_prep -v -s system

2. Modify the /stand/build/system file to add the absent driver(s) by invoking the kmsystem command. The -c Y specifies that driver-name is to be configured into the system.

   /usr/sbin/kmsystem -S /stand/build/system -c Y driver-name

   	NOTE: To avoid introducing format errors, do not edit the HP-UX system description files directly. Instead, use the commands kmsystem and kmtune. These commands are new for Release 11.0; consult kmsystem(1M) and kmtune(1M) in the HP-UX Reference.

3. Build the new kernel by invoking the mk_kernel command. This creates /stand/build/vmunix_test, a kernel ready for testing.

   /usr/sbin/mk_kernel -s /stand/build/system

4. Save the old system file by moving it. Then move the new system file into place.

   mv /stand/system /stand/system.prev mv /stand/build/system /stand/system

5. Prepare for rebooting by invoking the kmupdate command. This sets a flag that tells the system to use the new kernel when it restarts.

   /usr/sbin/kmupdate

Bring the system down and physically install the disk device.

Turn on the power to all peripheral devices. Wait for them to become "ready", then turn on power to the SPU. On booting up, HP-UX detects the new disk and associates it with its device driver. insf creates the character and block device special (/dev) files required to communicate with the disk.

Execute /usr/sbin/ioscan -fun -C disk again, to identify the newly configured disk device and its device special files.